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OE#4243130300/YH12096
Private Label, Customized Label
8708309990
Company Profile
Products
“Oiled” is a keyword requiring special clarification. In the context of brake discs, it typically does not refer to lubricant on the disc surface (which would be extremely dangerous), but more likely indicates one of the following two scenarios:
Inaccurate description/translation issue: The most likely scenario is that this is an erroneous or simplified translation of “Coated.” This refers to a rust-preventive oily or waxy protective coating applied to the non-friction surface of the brake disc, which must be wiped off before installation.
Special Process: In rare cases, it may indicate an oil-impregnated sealing treatment applied to cast iron during manufacturing to enhance internal corrosion resistance, though this is uncommon.
Regardless of nomenclature, the core product remains an OEM-grade brake disc with rust-preventive properties, meeting the highest safety standards.
ECE R90 certification is the core requirement. It mandates that this brake disc meets identical specifications to Lexus genuine parts in critical safety metrics such as braking performance, mechanical strength, and dimensions. This constitutes the fundamental guarantee of both legal compliance and safety.
Rapid Clean Break-in: High-quality coated brake discs feature an ultra-thin, removable protective layer on their friction surface. After installation, this protective film is completely worn away during the first few braking cycles, revealing a fresh, clean friction surface. This enables a rapid, clean break-in process and prevents surface rust from improper storage from compromising braking performance.
Ensuring Braking Performance: Rear brakes bear relatively lighter loads and are more prone to rust buildup from infrequent use. The coating guarantees the brake disc surface delivers instant, effective friction when braking is required—especially during emergencies or when the electronic parking brake engages.
Overview
This product is an oiled rear brake disc engineered specifically for Lexus vehicles, carrying ECE R90 certification for compliance with international safety standards. The term “oiled” in this context requires special clarification—it does not refer to lubricant on the friction surface (which would be extremely dangerous), but rather to a rust‑preventive oily or waxy protective coating applied to the non‑friction surfaces of the brake disc. This protective layer safeguards the disc during storage and transit, preventing surface rust from compromising braking performance when the disc is finally installed. Designed for the rear axle—where braking loads are lighter and discs are more prone to rust buildup from infrequent use—this disc delivers reliable, consistent braking performance for Lexus owners. Available with multiple surface finishes and performance configurations, this product offers Lexus owners a quality replacement that combines OEM‑grade specifications with practical protection against corrosion.
Understanding “Oiled” – What It Means and What It Doesn‘t
A Common Misunderstanding
In the context of brake discs, “oiled” is a term that requires careful explanation.
It does not mean that oil or lubricant is applied to the friction surface—that would be extremely dangerous and would prevent the pads from gripping the disc effectively.
What “Oiled” Actually Means
The term most likely refers to a rust‑preventive oily or waxy protective coating applied to the non‑friction surfaces of the brake disc.
This coating is applied to areas such as the centre hub (mounting surface), the outer edges, and the cooling vent surfaces—areas that are not in contact with the brake pads.
The coating protects the disc from moisture, road salt, and corrosion during storage and transit.
The Purpose of the Oily Coating
Brake discs are manufactured from cast iron, which is inherently susceptible to rust.
Without protection, discs can develop surface rust during storage—particularly in humid environments or during long‑distance shipping.
The oily coating provides a temporary barrier against moisture, ensuring that the disc arrives at the workshop or customer in pristine condition.
Before installation, the coating is wiped off the friction surfaces with brake cleaner or a suitable solvent—a simple, quick process that prepares the disc for immediate use.
A Note on Terminology
In some cases, “oiled” may be an inaccurate or simplified translation of “coated.”
Regardless of the terminology, the core product remains an OEM‑grade brake disc with rust‑preventive properties, meeting the highest safety standards.
The Rear Axle – Why Corrosion Protection Matters
Lighter Braking Loads
The rear axle handles a smaller proportion of the vehicle‘s total braking force—typically 20‑40% compared to the front axle‘s 60‑80%.
Rear brakes generate less heat and experience less frequent use than front brakes.
Increased Corrosion Risk
Because rear brakes are used less frequently, they are more prone to rust buildup from moisture, humidity, and road salt.
Surface rust can form on the disc during periods of inactivity—overnight, between drives, or during extended storage.
Rust on the friction surface can cause noise, vibration, and reduced braking effectiveness until it is worn away by braking.
How the Oiled Coating Helps
The protective coating prevents rust from forming on the disc during storage and transit.
When the disc is installed, the coating is easily removed from the friction surfaces.
The disc is ready for immediate use with a clean, rust‑free friction surface.
This ensures that the first brake application is as effective as the thousandth.
ECE R90 Certification – Safety and Legal Compliance
ECE R90 is the European regulatory standard for replacement brake components.
The certification requires that the disc‘s braking performance falls within a specified range of the original equipment.
Fade resistance, stopping distance, and structural integrity are verified under the certification process.
For Lexus owners, this provides confidence that the replacement disc meets the same safety standards as the original equipment.
For workshops and distributors, ECE R90 certification reduces liability and simplifies compliance in regulated markets.
Rapid Clean Break‑In – The Practical Advantage
How the Protective Layer Works
High‑quality coated brake discs feature an ultra‑thin, removable protective layer on their friction surface.
This layer is designed to be completely worn away during the first few braking cycles after installation.
As the protective film wears off, it reveals a fresh, clean friction surface.
The Benefits of This Design
Rapid break‑in – The disc does not require an extended bedding‑in period. The protective layer is removed quickly, exposing the bare cast iron surface for immediate pad transfer.
Clean break‑in – The protective layer prevents contaminants from embedding in the friction surface during the initial braking cycles.
Consistent performance – By preventing surface rust from improper storage, the disc delivers consistent braking performance from the first application.
Why This Matters for Lexus Owners
Lexus vehicles are engineered for refined, quiet, and consistent performance.
A disc that requires extended bedding‑in or that suffers from rust contamination can compromise that refinement.
The rapid clean break‑in ensures that the replacement disc delivers the same quality of braking as the original equipment—from the very first stop.
Surface Protection Options – Beyond the Oily Coating
Oiled (Standard)
Light rust‑preventive oil film applied to non‑friction surfaces.
Protects during storage and transit.
Easily cleaned before installation with brake cleaner or a suitable solvent.
Suitable for most applications and climates.
Painted
Durable paint applied to the hub and outer edges.
Provides long‑term corrosion resistance.
Recommended for regions with high humidity, coastal environments, or winter road salt exposure.
Coated
Advanced anti‑corrosion coating (zinc or geometric) offering superior long‑term protection.
The coating gradually wears from the friction area during normal braking while the rest of the disc remains permanently shielded.
The highest level of corrosion protection for demanding environments.
Performance Design Options
Ventilated (Standard)
Internal cooling vanes between the two friction faces promote airflow and dissipate heat.
Essential for managing the thermal loads of braking, even on the rear axle.
Drilled Configuration
Holes across the friction surface enhance heat dissipation and water evacuation.
Reduces gas build‑up between pad and disc.
Improves wet‑weather braking response.
Slotted Configuration
Grooves clean the pad surface, removing dust and debris.
Prevents pad glazing, maintaining consistent friction.
Improves initial bite for more responsive braking.
Drilled + Slotted Combination
Combines cooling, cleaning, and bite for maximum performance.
Recommended for performance‑oriented Lexus owners or demanding driving conditions.
Who Is This Product For?
Lexus Owners
For drivers of any Lexus model—ES, IS, GS, LS, RX, NX, UX, and others.
For those who value the refined, quiet, and consistent braking performance that Lexus is known for.
For owners who want a quality replacement without paying dealership prices.
For those who appreciate the practical protection of an oiled coating during storage and transit.
Lexus‑Focused Workshops
For service centres that regularly work on Lexus vehicles.
The oiled coating ensures the disc arrives in pristine condition—no rust, no contamination, no customer complaints.
The rapid clean break‑in means faster installation and satisfied customers.
Vehicle Owners in Humid or Coastal Regions
For owners who live in areas with high humidity, coastal salt air, or frequent rain.
The protective coating provides an extra layer of defence against corrosion.
The disc remains rust‑free even after extended periods of storage.
Multi‑Vehicle Households
For households with multiple vehicles where the Lexus may not be driven daily.
The protective coating prevents rust from forming during periods of inactivity.
When the vehicle is driven, the brakes perform as expected—no noise, no vibration, no surprises.
The Lexus Difference – Why Quality Matters
Lexus is Toyota‘s luxury division, known for exceptional build quality, refinement, and reliability.
Lexus owners expect their vehicles to perform flawlessly—every time, in every condition.
Brake noise, vibration, or reduced performance is simply not acceptable in a Lexus.
This disc is manufactured to meet Lexus‘s exacting standards—OEM‑grade specifications, ECE R90 certification, and rigorous quality control.
The oiled coating is just one more detail that ensures the disc arrives in perfect condition, ready for installation.
Quality Assurance and Manufacturing Standards
Manufactured to Lexus OEM specifications for rear‑axle fitment.
ECE R90 certified—safety performance verified.
100% critical dimensions, runout and DTV (disc thickness variation) inspection.
Test shear strength, compressibility, density, flatness and parallelism.
Oily protective coating applied to non‑friction surfaces for corrosion protection during storage and transit.
Fitment and Compatibility
Specifically designed for the rear axle of Lexus vehicles.
Suitable for a wide range of Lexus models—ES, IS, GS, LS, RX, NX, UX, and others.
Oiled protective coating on non‑friction surfaces.
Available with ventilated, drilled, slotted, or combined configurations.
Direct replacement—no modifications required.
Consult the product catalogue or contact Winhere with vehicle details for specific fitment confirmation.
Test and Inspection
100% critical dimensions, runout and DTV inspection
Material physical and chemical inspection
Test shear strength, compressibility, density, flatness and parallelism
Test performance and noise/NVH
Catalogue
Certifications
